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-   -   Modification advise (http://www.wrxtuners.com/forums/f52/modification-advise-32881/)

Serdar 08-12-2012 09:11 AM

Modification advise
 
Hello to all members, Just a newbie so excuse me if i have posted in the wrong section or if this matter has been covered. However i have an 2003 Clubspec evo 6 WRX with the following

AVO-500 roller turbo
Xforce Turboback exhaust
Hyperflow TMIC
Denso 750cc Injectors
Turbosmart FPR 800Hp
Bigger Fuel pump
k&n panel filter in stock airbox
Stock BOV
21psi & 204KW

My question is is it worth going for an cold air intake with a k&n or Hyperflow filter coming down the side guard along with an aftermarket b.o.v

If so what will be the benefits and anything in power increase?

Please help as i await to hear your responses. Thank you members

newtothegame 08-12-2012 10:18 AM

If neither of the part you mentioned are a restriction I wouldnt waste money on replacing them. Thats just my advice. You might see small gains with a proper CAI and a tune, but if your BPV isnt leaking there is no need to replace it at all.

BLAZE2099 08-12-2012 10:44 AM

I second on the BPV, although 21 psi is pushing its limits.

brfatal 08-12-2012 11:29 AM

[quote=newtothegame;284022]If neither of the part you mentioned are a restriction I wouldnt waste money on replacing them. Thats just my advice. You might see small gains with a proper CAI and a tune, but if your BPV isnt leaking there is no need to replace it at all.[/quote]

That stock intake is absolutely a restriction. If his intake is the same one we have then he would have benefited from one on a stock turbo, nevermind an AVO 500, which is the size of a Dom 1.5 XT. That turbo is overkill for the car though, and your power number seem low for how much boost you're making.

Serdar 08-12-2012 05:33 PM

Hi guys, Iv just spoken to my mechanic and the car is 20psi sorry not 21psi. Power wise thats all the mods iv done, there is no head work or any other internals etc. It has only been tunes once after all the mods and it pushed 204kw since than iv added an up-pipe as the factory one was rattling. Im thinking of adding an hyperflow cold air intake and unsure on what bov. Once thats complete i will be returning for another tune. All advise required thanks guys

brfatal 08-12-2012 06:02 PM

There is still no reason that at 20 psi you shouldn't be making 260 kW on a turbo that size. I would expect what you're making on a low boost map.

Serdar 08-12-2012 08:33 PM

Im really unsure about that, however I will take it to another tuner and get them
To have a look once I install the cold air and bov however still unsure if I need a bov if
So which one. Thanks

brfatal 08-12-2012 09:48 PM

Intake and take it to another tuner.

Serdar 08-12-2012 09:53 PM

Will do mate also it's still got the standard computer, I think it was flashed last time what's your recommendations on that, and the bov thanks

newtothegame 08-12-2012 11:10 PM

BOV can hold up to 24PSI (I have seen) it had the "crush mod" done to it tho, A quick google search will get you a "how to" for it. But I would stick with someone like Cobb, GFB (Go Fast Bits) or Turbo Smart for a quality BPV. Be sure that you get a By Pass Valve (like the stock one) that recirculates your air back into the intake, and not one that completely vents your air right to the atmosphere, its noisy and you could run into performance issue with it.

Serdar 08-13-2012 05:23 AM

Thanks for that tip I will change that along with the cai and re tune the car. Is there anything else worth adding before heading back to the rollers??

pzr2874 08-13-2012 05:50 AM

Add a Forge BPV to that list as well.

3port BCS - Grimmspeed/COBB/Prodrive

psinuse 08-13-2012 08:00 PM

I thought you guys in Australia were born knowing everything about these cars. It's in your blood isn't it? Those injectors are holding you back...

Serdar 08-14-2012 04:38 AM

Lol, don't know about Australia in general but I'm unsure myself, and what do you mean by the injectors what would I need to replace them with if they are the problem

pzr2874 08-14-2012 05:47 AM

750cc injectors will max out pretty quick on that turbo is what he means.

Depends how aggresive you want the tune to be IMHO


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